<p>Attaches a project policy to a Amazon Rekognition Custom Labels project in a trusting AWS account. A project policy specifies that a trusted AWS account can copy a model version from a trusting AWS account to a project in the trusted AWS account. To copy a model version you use the <a>CopyProjectVersion</a> operation.</p> <p>For more information about the format of a project policy document, see Attaching a project policy (SDK) in the <i>Amazon Rekognition Custom Labels Developer Guide</i>. </p> <p>The response from <code>PutProjectPolicy</code> is a revision ID for the project policy. You can attach multiple project policies to a project. You can also update an existing project policy by specifying the policy revision ID of the existing policy.</p> <p>To remove a project policy from a project, call <a>DeleteProjectPolicy</a>. To get a list of project policies attached to a project, call <a>ListProjectPolicies</a>. </p> <p>You copy a model version by calling <a>CopyProjectVersion</a>.</p> <p>This operation requires permissions to perform the <code>rekognition:PutProjectPolicy</code> action.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}